DE45454C - Process for the purification of refinery clarifications and other sugar juices using fatty acids to exclude by-products - Google Patents

Description

IMPERIAL

ΡΑΤΕΝΤΑΜΤΛ &

The present invention relates to a method for extracting sugar from beet or beetroot Sugar juices or Sugar solutions of all kinds, by which the production of crystallized Postproducts and molasses in ongoing operations are avoided by reducing the crystallization the harmful effects of organic and inorganic non-sugar substances lifted during boiling in a vacuum and the substances mentioned, in particular the alkalis and alkaline earths, excreted from the green syrup during saturation after boiling on grain will.

Exact tests carried out in large-scale operations have shown that by adding a small amount of fatty acids (expediently up to _1/2 pCt. Of the weight of the filling compound) to the sugar juices to be boiled down to grain in a vacuum, or. Sugar solutions (clarified egg or syrup) completely achieved. In the vacuum, the fatty acids bind the alkalis and the small amounts of alkaline earths and thus neutralize their harmful effect on the sugar in the solution. The green syrup resulting from this process, which, in addition to the organic nonsugar substances, contains the alkalis and alkaline earths of the clarified or syrup to be cooked in connection with the fatty acid used, gives these alkalis and alkaline earths in connection with the fatty acid and also the organic nonsugar substances to the sludge which arises from the saturation of the sugar solution mixed with this green syrup. Of the fatty acid, whose beneficial effect described only takes place when boiling in a vacuum, only small amounts have to be added, which correspond to the alkali content of the sugar solution to be boiled. Alkaline earths and usually 0.5 pCt. never exceed the weight of the filling compound.

According to the information given, it appears that the alkalis are excreted to a great extent of the inventor from the following analysis of a saturation sludge carried out by Rammeisberg using analytical methods from the large farm. Here, after-products were made with sugar-lime milk according to the Scheibler-Seyferth method and processed with green syrup.

The composition of the sludge resulted in:

Water . 5 5.36 pct.,

inorganic substance 3 ¹ ; ' ^8th

Loss on ignition (organic substance) 13.46

ϊί ⁵ ΙΟΟ, οο pCt.

The composition of the inorganic substance was as follows:

Calcium Oxide (Ca O). .. 17.51 pct.,

carbonate of lime (Ca CO ₃ ). . . 4.53

Potassium Hydroxide (KHO) 2.50

Sodium hydroxide (Na HO). . . . 2.50

sulphate of lime (Ca SO ₄ ). . 1.06
Iron oxide and alumina (Fe ₂ O ₃

+ Al ₂ O ₃ ) i, ₄₂ -

Claims (1)

Phosphoric acid (P ₂ O ₅ J 0.83 pCt., Magnesium oxide (Mg O) 0.06 acids insoluble 0.65 indeterminable loss 0.12 C ^ 31.18 pCt. Embodiments of the method are recommended depending on its application the following under I., II. and III. described. I. When working in refineries with pure raw sugar, those sugar juices are respectively at the beginning of operation. To clarity or thick juices, which are boiled down on grain, such an amount of fatty acid is added during the boiling in a vacuum that it is sufficient to neutralize the action of the organic and inorganic non-sugar substances (especially the alkalis and alkaline earths), which is harmful to crystallization, and the same in the further treatment of the To excrete green syrups in the saturation sludge; this amount is up to ^J / ₂ pCt. on the weight of the filling compound. The so-called Green syrup is added to saturation pans, in which sugar is then dissolved diluted to 20 ° Brix at approx. 80 ° C. in the drainage water of the various factory stations and it is advisable to add at least as much lime as the sugar added as such and through the green syrup Requires formation of calcium monosaccharate. After adding the green syrup which is measured according to the daily total quantity and the number of pans the juice is so long saturated by means of carbonic acid that it is evident when examined with litmus acidic reaction is recognizable, after which the supply of carbonic acid is immediately interrupted must be. The precipitation or mud settles on it quickly. It likes this it should be expressly noted that such a far-reaching saturation in the previous ones Procedure was not possible, but is necessary for this procedure. Are in the mud the alkalis of the green syrup in connection with lime and fatty acids, as well as with the organic ones Impurities passed over. To separate the juice from the sludge, the contents of the saturation pans are used in the usual way By means of Montejus or a pump, pressed through filter presses and the juice possibly subjected to further saturation, further purified by filtration, evaporated, filtered again and in vacuo Filling mass is boiled down, whereby, as at the beginning of the work, again fatty acid in the corresponding Amount is added u. S. F. II. At the refining work in the factories, which with molasses desugarization and throwing into the saturation, the process can work as long as there is still a supply of molasses are present, are handled in the same way as for the refineries according to I.; there is then only the addition of Add sugar-lime milk, depending on its lime content, the addition of free quicklime is decreased. III. When processing beets with and without the addition of sugar-lime milk from the The process can expediently be carried out in such a way that the Most of the organic impurities in the beet juice are removed by saturation, then this pre-cleaned juice mixed with green syrup and in the above-described Way is treated further. According to the procedure thus described, it is in the large farm in which the same goes is checked, possible the sugar juices in spite of the supply of the green syrups in such To gain purity, so that the filling material can be mixed, as in work, without the addition of green syrup Process either on Consumwaare or raw sugar, and it will be at this process only produces after-products, but only for one or more brews, when the operation is stopped and therefore the last green syrup is no longer in the saturation can be traced back; but it is not ruled out that this residual amount is taken up again of the company to introduce saturation. All fatty acids which can be separated off from the fats can be used for the present process find, so z. B. palmitic acid, stearic acid, oleic acid, margaric acid. Patent claim: Process for the purification of refinery clarity and other sugar juices using fatty acids to exclude byproducts, characterized by the addition of fatty acids for the boiling in the Vacuumverkochapparate for binding the alkalis, as well as by the Overfilling of the fatty acids and a part of the alkalis in the separating sludge in the Make sure that the syrup thrown off, suitably diluted with other sugar solutions, until Lime is added to the formation of monosaccharate and then carbonated up to When the acidic reaction occurs, it is saturated.